Last week I managed to bend the back wheel on my town runabout. Unfortunately as it's a 20+ year old bike, finding a new one is proving a bit tricky. I need:
700c narrow rim (to take 22mm tyre)
Shimano 7-speed freehub body
126mm O.L.D. (Over Locknut Dimension - distance between the rear dropouts).
The last one is the trickiest part, as the standard became 130mm not long after this bike was built.
If anyone has any clues, knows of any vintage bike-bits websites that aren't too pricy, or has one hanging in their garage, please let me know. I've just spent £40 on what I thought was right, but it turned out to be a hybrid wheel with a wide rim and 135mm O.L.D. so it's going back in the morning.
I think a shimano tiagra hub on mavic open sport should work if you remove the spacer on the NDS of the hub and then redish the wheel, you may also need to cut the axle as well. You also need a spacer to get the cassette to fit.
What material is the frame made from? I'm no expert but I believe a steel frame could likely be bent fairly safely to achieve an extra 4mm between the rear dropouts.
At that age, is the frame steel? If so, and if it is more runabout than treasured vintage, it is apparently possible to carefully spread the spacing (cold set) so it will take 130 mm OLD. Had considered doing it to my own 1979 Nishiki Landau.
You'll have no issue at all with 4mm difference. I have done the very same with an old steed having originally a old school campag 6 spd setup wheel to a modern 8 spd Shimano. No requirement for a cold set.
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